Great amount of data is being accumulated very rapidly in the Internet era. Consequently, it takes a lot of time and effort to process these data for knowledge discovery and decision making. Compressed transaction data set methods is much better as compare to the other methods a more efficient approach, called Mining Merged Transactions with the Quantification Table (MMTQT) is proposed, which can compress the original database into a smaller one and perform the data mining process without the above problems.